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Lecture Notes in Computer Science
QcBits is a code-based public key algorithm based on a problem thought to be resistant to quantum computer attacks. It is a constanttime implementation for a quasi-cyclic moderate density parity check (QC-MDPC) Niederreiter encryption scheme, and has excellent performance and small key sizes. In this paper, we present a key recovery attack against QcBits. We first used differential power analysis (DPA) against the syndrome computation of the decoding algorithm to recover partial informationdoi:10.1007/978-3-319-66787-4_1 fatcat:prugodyqk5etrnk3byjtj4ruo4